▪ Be aware that the refrigerant inside
the system is odourless.
INFORMATION
R290 is denser than air, so in open air it sinks to floor level.
Electrical
DANGER: RISK OF
ELECTROCUTION
▪ Turn OFF all power supply before
removing the switch box cover,
connecting electrical wiring or
touching electrical parts.
▪ Disconnect the power supply for
more than 10 minutes, and measure
the voltage at the terminals of main
circuit capacitors or electrical
components before servicing. The
voltage MUST be less than 50 V DC
before you can touch electrical
components. For the location of the
terminals, see the wiring diagram.
▪ Do NOT touch electrical components
with wet hands.
▪ Do NOT leave the unit unattended
when the service cover is removed.
WARNING
NEVER replace a fuse with a fuse of a
wrong ampere rating or other wires
when a fuse blows out. Use of wire or
copper wire may cause the unit to
break down or cause a fire.
WARNING
▪ After finishing the electrical work,
confirm that each electrical
component and terminal inside the
electrical components box is
connected securely.
▪ Make sure all covers are closed
before starting up the unit.
LMSEY1A09/13 + LMSEY2A19/25
Daikin LMS
4P728169-1B – 2023.07
3 About the unit and options
WARNING
Never touch a person receiving an
electrical shock, or you could suffer
one too. Do not touch the person until
you are sure power is turned off.
Electrical shocks always need
emergency medical attention, even if
the victim seems to be fine afterwards.
WARNING
A magneto thermal circuit breaker,
having a contact separation in all poles
providing full disconnection under
overvoltage category III condition,
MUST be installed in the fixed wiring.
In case of multiple units each unit must
have its own circuit breaker.
Note that this magneto thermal circuit
breaker should not be used to turn the
unit on and off under normal operating
conditions. For that, one should use
the controller.
3
About the unit and options
3.1
About the system
The LMSEY unit is a refrigeration unit which produces coldness by
vaporising a liquid refrigerant (Hydrocarbon R290 type) at low
pressure in a heat exchanger (evaporator). The resulting vapour is
brought back to liquid state by mechanical compression at a higher
pressure,
followed
by
cooling
(condenser).
Defrosting takes place automatically in pre-set cycles, by injecting
hot gas; manual defrosting is also possible.
3.2
About the different models
LMSEY1A09+13AVM01
in
another
heat
exchanger
LMSEY2A19+25AYE01
Operation manual
5